/// <summary>
/// Checks if a demand already exists in a given collection of demands
/// </summary>
/// <param name="demands">Collection of demands to check if contains the demand</param>
/// <param name="demand">The demand to check if is contained in the collection</param>
/// <returns>True if demand is duplicated, false otherwise</returns>
public async Task <bool> ExecuteAsync(IEnumerable <Demand> demands, Demand demand)
{
if (demand.IsNull())
{
throw new ArgumentNullException(nameof(demand));
}
if (demands.IsNull())
{
throw new ArgumentNullException(nameof(demands));
}
if (demands.IsEmpty())
{
return(false);
}
foreach (var demandInCollection in demands)
{
// Different product type, the demand is not duplicated
if (demandInCollection.ProductTypeId != demand.ProductTypeId)
{
continue;
}
// Same product type and both without attributes, the demand is duplicated
if (demandInCollection.WithoutAttributes() && demand.WithoutAttributes())
{
return(true);
}
// Same product type one with attributes and the other one without attributes, the demand is not duplicated
if ((demandInCollection.WithoutAttributes() && !demand.HasAttributes()) ||
(!demandInCollection.HasAttributes() && demand.WithoutAttributes()))
{
continue;
}
// Same product type and both with attributes but different number of them, the demand is not duplicated
if (demandInCollection.GetNumberOfAttributes() != demand.GetNumberOfAttributes())
{
continue;
}
// We get attributes of both demands as dictionaries
var demandInCollectionAttributesDic = demandInCollection.GetAttributesDictionary();
var demandAttributesDic = demand.GetAttributesDictionary();
// Same product type and same number of attributes, but different attributes, the demand is not duplicated
if (demandInCollectionAttributesDic.Keys.Except(demandAttributesDic.Keys).Any())
{
continue;
}
bool differentAttributesValue = false;
// Same product type and same attributes, we check the values
foreach (var demandValueAttr in demandAttributesDic)
{
var demandInCollectionValueAttr = demandInCollectionAttributesDic[demandValueAttr.Key];
if (demandInCollectionValueAttr.HasDifferentValue(demandValueAttr.Value))
{
differentAttributesValue = true;
break; // We stop comparing attributes because we already have found one with different value
}
}
// Same product type, with same attributes and same value for the attributes, the demand is duplicated
if (!differentAttributesValue)
{
return(true);
}
}
return(false);
}
